Retrospectiva del bosque de pino y encino de la Sierra Madre Occidental, Sonora, Noroeste de México, hace 1000 años Údair: Ortega-Rosas, Carmen Isela, Peñalba, M. Cristina, López-Sáez, José Antonio, Van DeVender, Thomas R.

Hoffmannia uxpanapense (Rubiaceae), a new species from southern Veracruz and Oaxaca, Mexico Údair: Castillo-Campos, Gonzalo, Bautista-Bello, Alma Patricia

Taxonomic treatment of the tribe Mutisieae (Asteraceae) in Mexico Údair: Redonda Martínez, Rosario

Flora and vegetation of the municipality of Álamo Temapache, Veracruz, Mexico Údair: Francisco-de la Cruz, Axel, Villarreal-Quintanilla, José A., Estrada-Castillón, A. Eduardo, Jasso-Cantú, Diana

Four new records for the Honduran flora and a preliminary checklist of pteridophytes and lycophytes for the Río Plátano Man and Biosphere Reserve, Honduras Údair: Reyes-Chávez, Johan David, Rojas-Alvarado, Alexander, Reyes-Calderon, Onán

Record of reproductive structures of three species of the Order Bryopsidales (Chlorophyta, Ulvophyceae) from the Mexican Caribbean Údair: Acosta-Calderon, Julio Adulfo, Mateo-Cid, Luz Elena, Mendoza-González, Ángela Catalina, García-López, Deisy Yazmín

New records of vascular plants for the department of Boyacá, Colombia Údair: Gómez-Parra, Sofía, Mendoza-Cifuentes, Humberto, Morales-Puentes, María Eugenia, Malagón, María, Manrique, Naisla, Moreno, Diego

First record of Macrovalsaria megalospora (Dothideomycetes-Ascomycota) from Colombia Údair: Raymundo, Tania, Martínez Pineda, Michelle, Osorio-Navarro, Yulena S., Chamorro-Martínez, Hannya A., Valenzuela Garza, Ricardo

The Cactaceae family in Tabasco, Mexico Údair: Campos Díaz, Manuel Jesús, Burelo Ramos, Carlos Manuel, Arias, Salvador

Ophioglossum nudicaule (Ophioglossaceae) and Paspalum serpentinum (Poaceae), two new records for the Yucatán Peninsula, Mexico Údair: Ortiz-Díaz, Juan Javier, Tun-Garrido, Juan, Ancona, Juan José

New record of Govenia purpusii (Orchidaceae) in La Malinche National Park, Tlaxcala, Mexico Údair: Pérez Alva, Braulio Ricardo, Pérez Flores, Guillermo Alejandro

Present and potential distribution of the cacti Ferocactus histrix, Mammillaria bombycina and M. perezdelarosae in the state of Aguascalientes, Mexico Údair: Meza Rangel, Ernestina, Tafoya, Felipe, Lindig Cisneros, Roberto, Sigala Rodríguez, José Jesús, Pérez Molphe-Balch, Eugenio

The vascular plants endemic in the state of Queretaro. I. Preliminary numerical analysis and definition of areas of concentration of the restricted-range species Údair: Rzedowski, Jerzy, Calderón de Rzedowski, Graciela, Zamudio, Sergio

Weed plants associated with rain-fed maize crops in saline soils of the Lake Cuitzeo shore, Michoacán, Mexico Údair: Sánchez-Blanco, Judith, Guevara-Féfer, Fernando

New records of red algae (Rhodophyta) for Cabezo Reef, National Park Sistema Arrecifal Veracruzano, Gulf of Mexico Údair: Galicia-García, Citlalli, Robinson, Néstor M., Okolodkov, Yuri B.

New records of green (Chlorophyta) and brown algae (Phaeophyceae) for Cabezo Reef, National Park Sistema Arrecifal Veracruzano, Gulf of Mexico Údair: Robinson, Néstor M., Galicia-García, Citlalli, Okolodkov, Yuri B.

The Agave victoriae-reginae complex (Agavaceae) Údair: González-Elizondo, M. Socorro, González-Elizondo, Martha, López-Enríquez, Irma L., Reséndiz-Rojas, Lorenzo, Tena-Flores, Jorge A., Retana-Rentería, Flor Isela

Peridinium quinquecorne var. trispiniferum var. nov. (Dinophyceae) from a brackish environment Údair: Aké-Castillo, José Antolín, Vázquez, Gabriela

Flora of the central part of the State of Chihuahua, Mexico Údair: Estrada-Castillón, Eduardo, Villarreal-Quintanilla, José Ángel

Palynological study of the genus Macroptilium (Benth.) Urb. (Leguminosae) in Mexico and Central America Údair: Torres-Colín, Leticia, Fuentes-Soriano, Sara, Delgado-Salinas, Alfonso